Seiko Cal. 5636 - 821

This Spring Drive model from 1967 features a 40mm Stainless Steel case. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-594a52934da9]

Also known as: Rally, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1967

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